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(No Model.) 3 sheets-sheet 1. R. DNSMORE.

MAGAZINE FIRE ARM.

Patented June 30,1891.

(NoModel.)

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Patented'June 30,1891.

R. DINSMORB. MAGAZINE FIRE ARM.

3 Sheets- Sheet 3,

(No Model.) u n R. DINSMORE. MAGAZINE FIRE ARM. y1L\Io.455,o34,. PatentedJune 30,1891.

UNITED STATES PATENT OFFICE.

ROBERT DINSMORE, OF VES'ION, VEST VIRGINIA, ASSIGNOR OF ONE-HALF TO ADOLPH GREENSTEIN, OF SAME PLACE.

MAGAZINE FIRE-ARM.

SPECIFICATION forming part of Letters Patent No. 455,034, dated J une 30, 1891.

Serial No. 352,119. (No model.)

Application filed May 17, 1890.

To all whom, it may concern:

Be it known that I, ROBERT DINsMoRE, a citizen of the United States, residing at NVeston, in t-he county of Lewis and State of West Virginia, have invented a new and useful Magazine Fire-Arm, of which the following is a specification.

This invention has relation to magazine fire-arms, and to that class thereof which are ham mei-less.

The objects of the invention are to provide an extremely simple and economically-constructed tire-arm ot the magazine pattern, the magazine, carrier-block, and firing-pin of which are all adapted to be operated by a single movement ot' the trigger.

With the above general objects in View the invention consists in certain features of construction hereinafter specified, and particuzo larly pointed out in the claims.

Referring to the drawings, Figure 1 is a side elevation of the magazine-gun constructed in accordance with :my invention. Fig. 1a is a detail in side elevation and partial section of the pneumatic tube, the pump, and barrel. Fig. 2 is a longitudinal section, the interior mechanism being viewed in right-side elevation. Fig. 3 is a similar section, the view bet-V ing taken from the lett side. Fig. lLis asimilar View to Fig. 3, the piece being cocked and ready for firing. Fig. 5 is an enlarged perspective of the tumbler and trigger. Fig. 6 isa detail of the carrier-block. Fig. 7 is a detail of the pump. Fig. 8 is asectional View of the pump. Fig. 9 is atransverse section through the piece and through the valve of the pump. Fig. 10 is a similar View in front of the carrier-block. Fig. 11 is a detail in perspective of the plunger. Fig. 12 is a detail in lperspective of the connection between the plunger and the pneumatic feed device.

Like-numerals of reference indicate like parts in all the figures of the drawings.

1 designates the barrel of the piece, to which is secured upon its under side in any usual manner the magazine 2 said magazine and barrel being connectedto the forearm 3. The rear ends of the barrel and magazine iit in suitable sockets formed in the front end of the lock-frame 5, which latter is connected in The the usual manner to the butt or stock 6.

lock-frame has passed therethrough a bearing-bolt 7, upon which is pivoted the trigger 8. The trigger 8 is provided with a rearward extension formed bya pair ot bearing-ears 9, and pivoted within the ears, as at 10, is an arm 11, provided near its upper free end with a pair of transverse bearing lugs or trunnions 12, upon which bears the bifurcated end 13 of the back spring 14 of the piece, the 6o rear end of said back spring being connected to the lock-frame by means of the usual screw l5. The tendency of the spring 14 is to press the trigger 8 forward, as is usual. Diametrically opposite the depending portion or linger of the trigger 8 the same is provided with a pair of bearing-ears 16, in which is pivoted, as at 17, a link 18, the opposite end of which is pivoted, as at 20, to the lower bifurcated portion 21 of a tumbler 22, which 7o latter is mounted for oscillation upon a bearing-bolt 23, passing through the lock-frame at a point in rear and above the bearing-bolt 7. Diametricallyopposite the pivot 2O there is pivoted, as at 24, to the tumbler 22, at its upper end, a paWl 25, provided at its side with a liberating-pin 26, and between the ears in the recess formed thereby there is interposed a light coiled spring 27, which serves to elevate the free or engaging end `of the pawl.

28 designates a partition, which separates or divides the lock-frame into a front and rear chamber, and in the latter chamber is located the parts just described. In suitable guide-openings 29, formed in the partition just mentioned and the rearwall of the carrier-block opening, is the plunger 30, the under side of which is cut away to form a shoulder 31 near the rear end thereof, which shoulder is normally engaged bythe spring-pawl 9o 25. The plunger is provided at its front end with a head 32, from the rim of which projects the firing-"pin 33 and a pair of springcatches 3d. A collar 35 is secured to the plunger by means of a set-screw 3G and inter- 9 5 posed between the collar andthe partition 28 and encircling the plunger is a coiled spring 37, the tendency of which is to project the bolt to the front.

38 represents a latch, provided at it-s rear roo end upon one side with a hub 39, loosely seated for oscillation in a countersunk recess 40,

formed in the side wall of the lock-frame. The latch is provided with a curved slot 4l between its pivot and free end and adapted to ride in the same is a pin l2, projecting from the adjacent side of the tumbler 22. In advance of its cut-away portion or shoulder 3l the bolt is provided with a groove or notch forming aforwardshoulder 43. (See Fig. ll.)

ln an opening in the lock-frame in rear of the breeclrof the barrel is located the vertical carrier-block llasaid block being adapted for Vertical reciprocation in rear of the barrel and the magazine. The carrier-block is vertically recessed upon its upper side to form a cartridge-receiving portion, and said recess is flared at its front end, as at l5, to receive the head 32 of the plunger.

46 designates the carrier-block-elevating lever or arm, and the same is pivoted, as at 47, in advance of the bolt 7 of the trigger. The rear end of the arm is extended to form a tail 4S,and the front end of said arm terminates in a head ai), which takes loosely within a recess 50, formed in the rear wall or side of the block. A flat spring 5l is secured in position under the arm 46, and has its free bent end abutting against a shoulder 52, formed upon the under edge of said arm and serving to normally raise the free end of the arm. Above and below the tail portion 48 of the arm 46 there project upper and lower cam-lugs 53 and 5l, respectively, said lugs being designed to operate upon opposite sides of the tail portion -LtS and are formed upon the trigger.

The under side of the carrier-block is provided with a channel 55 for the passage of the cartridges to the magazine, and in said channel there is mounted a flat spring 5(3,the free end of which is bent to form a gate 57, adapted to cover the rear end of the magazine when the carrier-block is in raised position, as in the act of firing or elevating a cartridge.

Referring more particularly to Figs. 3, 4, and 9, 58 designates a pump-cylinder, the inner side of which is longitudinally slotted, as at 5), and in the bore of the cylinder is mounted for reciprocation a piston-head GO, which is actuated by and connected to a pump-arm 61 of angular shape and rigidly connected with or forms a part of the collar 35. At the front end of the cylinder upon the upper side there is located a valve-chamber 62, in which is mounted for reciprocation a check-valve An air-tube section 6l leads from the valve-chamber and by acoupling 65 is connected to a longer section of ytubing G6, the front end of which terminates within the front end of the magazine 2.

To load the piece the saine is inverted and the cartridges placed successively into the cartridge-channel of the carrier-block, the gate readily yielding from a slight pressure and permitting the cartridges to pass from the channel into the magazine, which in this way may be entirely filled. Pressure being 4removed from the block and gate, they resume their normal positions, as shown in Fig. 3. Taking the parts in the position shown in Fig. 3, and supposing a cartridge to be upon the carrier-block ready for elevation to the breech of the barrel, a pull to the rear upon the trigger 8 serves, first, to retract the plunger 30 by reason of the rearward oscillation ot' the tumbler 22, which is in engagement with the plunger through the medium of the spring-pawl 25. rlhe oscillations of the tumbler, it will be readily observed, are obtained through the medium of the link 18 and against the tension of the spring 14. As the trigger S is drawn to the rear the cam-lug thereof presses downwardly upon the tail 48 of the arm 4G and raises the carrier-block il to a point opposite the breech. ln this position the carrier-block is maintained until the plunger has reached the end of its rearward movement and is released from connection with the spring-pawl 25. This releasing is secured by means of lcontact of the pins 2G with the upper portion of the lock-frame, which tends to depress the pawl from below the plane of the shoulder 31 of the plunger, and the spring 37 throws the plunger forward and projects the cartridge into the bore of the barrel l. Vhen thus projected, the `spring-catches 3J: take over the flange or rim of the shell of the cartridge and the tiring-pin 33 serves to explode the saine. Then the spring-pawl 25 is liberated from connection with the bolt 30, the spring ll serves to return the tumbler and trigger to their normal positions, and in so doing the cam-lug 54. takes under and elevates the rear end or tail portion 4S of the hoisting 'arm or lever 46, and consequently depresses the front end of said lever and with it lowers the hoisting block ett. As the plunger 30 is drawn to the rear, as above described, so also is the plunger-arm and piston of the pump, the latter to such an extent as to permit air to enter the pumpcylinder through the front end of the slot in advance of the piston. Vhen, therefore, the plunger is released and is projected by its spring 37 to the front, in the similar manner is moved the plunger or pump-arm and the piston, and by the latter the air within the cylinder in advance of the piston is forced p through the valve-chamber, and by the chcckvalve into the air-tube, and from thence to the front end of the magazine 2, in rear of the line of cartridges contained therein, so that a pneumatic feed is provided and the series of cartridges are by compressed air forced toward the rear end of the magazine and the rearmost cartridge into the carrier-block. After the piece has been tired and the trigger again drawn to the rear the fresh cartridge IIO in the carrier-block is elevated by the carriery block but not before the plunger by the pawl 25 has been retracted out of the path of the carrier-bloclc Vhen the bolt is retracted the spring-catches 3l serve to withdraw the empty shell, and the saine is loosely suspended in the carrier-block passage and in the path of said block, the movement of the latter serv-` ing to disengage the shell from the catches' and throw the same upward out of the gun. I'Vhen this operation has taken place the parts, it will be observed, are in condition for a second discharge, and it will be apparentthat the piece may be successively and as rapidly discharged as the trigger is pulled. Vhen the tumbler is oscillated in the act ot' retracting the bolt, and after said bolt has been released from connection with the pawl 25, the free end of the latch 38 will, by reason of the curvature of the slot 4l, be elevated until it takes into the groove and abuts against the shoulder 43 thereof. This elevation of thev latch against the shoulder occurs just previous to the explosion of the cartridge, and hence said latch serves to prevent the plunger from being thrown to the rear by the recoil of the shell. As soon, however, as the pressure of the finger upon the trigger 8 is removed the spring li serves to oscllate the trigger forward and the tumbler in a similar direction and lower the latch out of the groove and from behind the shoulder 43.

The rear end of the plunger is chamfered or beveled, as at 67. A threaded opening 68 is formed in the side of the lock-frame, and threaded in said opening is a conical set or adjusting-plug G9. By means of this plug 69 it will be observed that the rear end of the bolt may be adapted to travel a greater or less distance before the same shall release itself from the spring-pawl 25. In this manner a most accurate timing may be secured between the movements of the bolt and carrier-block.

Although herein shown and described in connection with a magazine-ride, it will be apparent that the same principle and substantially the same construction may be employed in magazine Shotguns.

It will be at once noticed from the above description that I have succeeded in providing a magazine-rifle the construction of which comprises an exceedingly small number of parts, all of. which are strong' and durable and have very little, if any, frictional contact calculated to induce wear or breakage. It will be also observed that I avoid the use of the usual spring for feeding the cartridges- Vtube connecting the same with the front end of the magazine, the piston mounted in the cylinder, and an arm actuated by the plunger and connected with the piston, substantially as specified.

2. In a magazine-gun, the combination, with a reciprocating plunger and means for operating the same, of a pneumatic cylinder, a tube connecting the same with the frontend of the magazine, a valve located in the cylinder opposite its connection with the tube, a piston mounted in the cylinder in rear of the valve, and an arm connected with the plunger and lwith the piston, substantially as specified.

3. In a magazine-gun, the combination, with a reciprocating plunger and means for operating the same, of a pneumatic cylinder longitudinally slotted for a portion of its length and provided at-its front end with a valvechamber having a check valve, a piston mounted for reciprocation in the cylinder and arm connecting the same with the plunger and passing through the slot of the cylinder and adapted to move the piston in rear of the end of the slot, and a pneumatic tube leading from the upper end'of the valve-chamber to the front end of the magazine, substantially as specified.

el. In a gun, the combination, with a reciprocating plunger and a spring for throwing the same, said plunger being provided with a shoulder, of an oscillating tumbler provided at its upper end with a spring-pawl adapted to engage said shoulder, and a trigger pivotally mounted below the tumbler, and a loose connection between the tumbler and trigger, substantially as specified.

5. In a gun, the combination, with a reciprocating plunger and means for operating the same, said plunger being provided with a shoulder, of a pivoted locking-latch and devices for operating the same simultaneous with the movement ot' the plunger, and so as to take in rear of said shoulder, substantially as specified.

6. In a gun, the combination, with a reciprocating plunger andmeans for operating the same, of a pivoted locking-latch having a curved slot, an oscillating tumbler having a pin engaging the slot, and means for operating the tumbler, whereby the latch is thrown against the stop on the plunger, substantially as specilied.

7. In a gun, the combination, with areciproca'ting plunger and a coiled spring for throwing the same in one direction, said plunger being provided on its under side with front and rear notches, of an oscillating tumbler provided at its upper end with a springlatch for engaging the rear notch of the plunger, a pivoted latch having a slot adapted at its front end to engage the forward shoulder, and a pin projecting from the tumbler and riding in the slot, and mechanism for liberating the pawl and oscillating the tumbler, and

for elevating the free end of the latch in rear of the front notch subsequent to a liberation of the pawl, substantially as specified.

8. In a gun, the combination, with a reciprocating plunger and a spring for throwing the same, of means for reti-acting the plunger against the tension of its spring and releasing the same, and means for temporarily locking said plunger against retraction simultaneous IOO IIU

with the throw of the plunger, substantially as specified.

9. In a gun, the combination, with a reciprocating plunger and an oscillating tumbler having a spring-pressed pawl for engaging thc shoulder on the plunger, of means for oscillating the tumbler and for adjusting the rear end of the plunger, substantially as specified.

lO. The combination, with the reciprocating plunger, the rear end of which is beveled and provided with a notch or shoulder, said beveled end projecting through an opening in the lock-frame of the gun, of an oscillating tumbler and means for operating the same, a spring-pressed pawl connected to the tumbier and adapted to engage the notch or shoulder of the plunger, and provided with laterally-projecting liberating-pins adapted to strike against the inner surface of the lockframe, and an adjustable plug threaded in the aforesaid opening` below the beveled end of the plunger, substantially as specified.

11. In a magazine-gun, the combination, with the lock-frame having the carrier-block passage, the carrier-block mounted therein, the pivoted carrier-arm connected at its front end to the block and at its rear end extended beyond its pivot to form the tail, of the pivoted trigger having opposite cam-lugs adapted to actuate said arm by taking against the upper and lower sides of the tail portion, substantially as specified.

l2. In a magazine-gun, the combination, with a plunger, a spring for throwing the same in one direction, said plunger being provided with front and rear notches, an aircylinder having a valve, a tube leading from the valve-chamber to the magazine, a pistonhead mounted in the cylinder, and a plunger-arm connecting said head to the plunger, a pivoted oscillating tumbler, a pivoted pawl mounted in the upper end of the tumbler and spring-pressed into connection with the rear notch of the plunger and means for liberating said pawl, a latch pivoted at one side of the tumbler and provided with a cam-slot to receive a pin projecting from the tumbler, whereby said latch is adapted to be thrown against the rear notch subsequent to the release of the plunger, a carrier-block mounted in advance of the plunger, a carrier-block arm pivoted in the lock-frame and terminating in rear of its pivot in a tail portion, a trigger pivoted below the tumbler, a link loosely connecting the upper end of the trigger with the lower end of the tumbler, said trigger being provided with a pair of camlugs for operating upon opposite sides of the tail portion of the said carrier-block arm or lever, an arm projecting from the rear side of the trigger, and a spring secured to the frame and having its free end resting upon the said arm, substantially as speciiied.

I3. In a gun, the combination, with a plunger, a spring for throwing the same in one direction, said plunger being provided with front and rear notches, a pivoted oscillating tumbler, a pivoted pawl mounted in the upper end of the tumbler and spring-pressed into connection with the rear notch of the plunger, and means for liberating said pawl, a latch pivoted at one side of the tumbler and provided with a cam-slot to receive a pin projecting from the tumbler, whereby said latch is adapted to be thrown against the rear notch subsequent to the release of the plunger, a trigger pivoted below the tumbler, a link loosely connecting the upper end of the trigger with the tumbler, and' a spring for supporting the trigger, substantially as specitied.

In testimony that I claim the foregoing as my own I have hereto aiiixed my signature in presence ot' two witnesses.

ROBERT DINSMORE. 

